Phase-shifted polarimetric surface plasmon resonance sensor using a liquid crystal retarder and a diverging beam

Ibrahim Watad, Ibrahim Abdulhalim

Research output: Contribution to journalArticlepeer-review

Abstract

A simple phase-shifted polarimetric scheme to extract light polarization changes induced by the sample in surface plasmon resonance (SPR) sensors is presented. The proposed method is based on the conventional Kretschmann–Raether configuration in the angular diverging beam mode using a single wavelength and a variable liquid crystal retarder. An experimental demonstration was performed using different aqueous solutions of ethylene glycol showing a sensitivity of 118.7 deg/refractive-index-unit (RIU) and a detection limit of 1.03 × 10− 7 RIU.

Original languageAmerican English
Pages (from-to)1607-1610
Number of pages4
JournalOptics Letters
Volume44
Issue number7
DOIs
StatePublished - 1 Apr 2019

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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